[A Danish intestinal pseudomyiasis case caused by Eristalis tenax].

Intestinal pseudomyiasis caused by the larvae of the drone fly Eristalis tenax is sporadically reported and symptoms are varying. We report a ten-year-old boy with intermittent nonspecific abdominal pain. He noticed a larva in his stools which was later identified as the rat-tailed larva of Eristalis tenax. After passing the larva his symptoms subsided. No treatment was given. We aim to register the first case of human pseudomyaisis caused by E. tenax in Denmark.